chapter  8
14 Pages

OBSERVER-RELATIVE CHANCES IN ANTHROPIC REASONING?

Here we examine an argument by John Leslie (Leslie 1997) purporting to show that anthropic reasoning gives rise to paradoxical “observer-relative chances”.2 We show that the argument trades on the sense/reference ambi­ guity and is fallacious. We then describe a different case where chances are observer-relative in an interesting, but not paradoxical way. The result can be generalized: at least for a very wide range of cases, SSA does not engen­ der paradoxical observer-relative chances.